clang/test/CodeGen/asm_arm.c

   1 // REQUIRES: arm-registered-target
   2 // RUN: %clang_cc1 -triple armv6-unknown-unknown -emit-llvm -o - %s | FileCheck %s
   3
   4 void test0(void) {
   5         asm volatile("mov r0, r0" :: );
   6 }
   7 void test1(void) {
   8         asm volatile("mov r0, r0" :::
   9                                  "cc", "memory" );
  10 }
  11 void test2(void) {
  12         asm volatile("mov r0, r0" :::
  13                                  "r0", "r1", "r2", "r3");
  14         asm volatile("mov r0, r0" :::
  15                                  "r4", "r5", "r6", "r8");
  16 }
  17 void test3(void) {
  18         asm volatile("mov r0, r0" :::
  19                                  "a1", "a2", "a3", "a4");
  20         asm volatile("mov r0, r0" :::
  21                                  "v1", "v2", "v3", "v5");
  22 }
  23
  24
  25 // {} should not be treated as asm variants.
  26 void test4(float *a, float *b) {
  27   // CHECK: @test4
  28   // CHECK: call void asm sideeffect "vld1.32 {d8[],d9[]},
  29   __asm__ volatile (
  30                     "vld1.32 {d8[],d9[]}, [%1,:32] \n\t"
  31                     "vst1.32 {q4},        [%0,:128] \n\t"
  32                     :: "r"(a), "r"(b));
  33 }
  34
  35 // {sp, lr, pc} are the canonical names for {r13, r14, r15}.
  36 //
  37 // CHECK: @test5
  38 // CHECK: call void asm sideeffect "", "~{sp},~{lr},~{pc},~{sp},~{lr},~{pc}"()
  39 void test5() {
  40   __asm__("" : : : "r13", "r14", "r15", "sp", "lr", "pc");
  41 }
  42
  43 // CHECK: @test6
  44 // CHECK: call void asm sideeffect "", "
  45 // CHECK: ~{s0},~{s1},~{s2},~{s3},~{s4},~{s5},~{s6},~{s7},
  46 // CHECK: ~{s8},~{s9},~{s10},~{s11},~{s12},~{s13},~{s14},~{s15},
  47 // CHECK: ~{s16},~{s17},~{s18},~{s19},~{s20},~{s21},~{s22},~{s23},
  48 // CHECK: ~{s24},~{s25},~{s26},~{s27},~{s28},~{s29},~{s30},~{s31}"()
  49 void test6() {
  50   __asm__("" : : :
  51           "s0", "s1", "s2", "s3", "s4", "s5", "s6", "s7",
  52           "s8", "s9", "s10", "s11", "s12", "s13", "s14", "s15",
  53           "s16", "s17", "s18", "s19", "s20", "s21", "s22", "s23",
  54           "s24", "s25", "s26", "s27", "s28", "s29", "s30", "s31");
  55 }